When they had come to Capernaum, those who collected the didrachma coins{A didrachma is a Greek silver coin worth 2 drachmas, about as much as 2 Roman denarii, or about 2 days wages. It was commonly used to pay the half-shekel temple tax, because 2 drachmas were worth one half shekel of silver.} came to Peter, and said, \"Doesn't your teacher pay the didrachma?\"